Device for the production of induced currents in magneto machines and dynamos.



v A. KELLER-DORIAN. DEVICE FOR THE PRODUCTION OF INDUCED CURRENTS IN MAGNETO MACHINES AND DYNAMOS.

APPLICATION FILED DEC. 7, 1912. 1,095,1 18.

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9 k mMm-M Patented Apr. 28, 1914.

I A. KBLLER-DORIAN. v DEVICE FOR THE PRODUCTION OPINDUOED GURRENTS m MAGNETO' MACHINES AND DYNAMOS.

APPLICATION FILED no.1, 1912.

Patented Apr. 28, 1-914 2 slini'ms-snnm 2.

- x x qoo M Wz'Zne8ses: B G v H "UNITED STATES PATENT OFFICE.

ALBERT KELLER-DORIAN, or LYON, FRANCE.

DEVICE FOR THE PRODUCTION OF INDUCED CUR-RENTS IN MAGNETO MACHINES AND DYNAMOS.

Specification of Letters Patent.

Patented Apr. 28, 1914-.

Application flld December 7, 1912. Serial No. 735,452.

To all whom it may concern:

Be it known that I, ALBERT Kunm n- DoRIAN, a citizen of the French Republic,

. residing at Lyon, in France, .have invented turecoil, bymeans of an armature having polarized flanges movable in the magnetic field and rotating around the coil, which flanges are capable of adjustment to produce variations of the phaseof maximum induction. With this device may be combined a means for regulating the electromotive force ofthe induced currents, by varying proportionately to the angular speed the gap which separates the armature from "thearmature coil.

An embodiment of a high tension ignition magneto constructed in accordance on line 22 of Fig. 1, and Fig. 3

with the invention is illustrated in Figures 1 to 3 of the annexed drawings, in which- Fig. 1 is a section through-the axis of the device. Fig. 2 is a section of the same a section on line.33 of Fig. 2. Fig. 4 is a horizontal section on the axis of the armature of a second embodiment of this magneto.

Referring to Figs. 1 to 3, A represents permanent or electro magnets, which form the source of the magnetic energy; B and C are two polar members arranged the poles of the magnets, but these separate members may be dispensed with by constructing the poles of the magnets so as to form: them. In the construction represented the polar members have bearings 'b and c for rece tion of the journals e and of cir-. cularv dlsks E and F of magnetic metal, which can revolve parallel to the inner faces of the members B and O or of the poles of the magnets. On its other face each of said disks has one ormore flanges E, F of circular segmental form having the eripheral angle which assures maximum e ciency of the device. These flanges are arranged perpendicularly tothe plane of the disks. The two members thus formed are assembled and joined together by means of two sectors e 1 of non-magnetic material which inbetween .disk I rotates with the flanges of the armasures their insulation. \Vithin this structure is the armature coil formed by a Siemens coil D laterally supported by two disks G andII of nonmagnetic material which are provided with trunnions and 72. mounted in journals 6 and f of the disks E F. One of said trunnions at least projects beyond its bearing at one side to hold the coil in place and on the other hand to collect by means of fixed connections the induced currents passing from the primary coilto the circuit breaker as well as those passing from the secondary coil to the distributor if required, and to the sparking plugs.

One of the disk journals for instance f carries a disk. I rotatable with it and on which are formed bosses J of the ignition cams. The circuit breaker K is supported by the trunnion h of'the coil, thus being stationary and for this reason can be advantageously placed parallel. to the axis of rotation of the armature'and in the position shown in Figs. 2 and 3 corresponding tothe best conditions. of visibility and facility of maintenance, but if required it could however'be arranged perpendicularly to the axis of the armature as usual.

'VVith this construction each of the disks Eand Fis in permanent contact with the same pole of the source of magnetic energy. The result is that the flanges of each disk actually constitute movable polar masses of constant magnetism and consequently not subject to the influences of hysteresis, thus being'equivalent in factto magnets revolving around thecoil. If each dlSk l1tlS only one flange the effect of the movement of the armature is to cause the flux to pass alternately into the coreof the coil at each half revolution of the flanges producing an induced current in the coils. By increasing the number of flanges of the armature there may 'be obtained for each revolution as many induced currents as desired, the number of the latter being always equal to the number of flanges.v

The spark is obtained, as usual, by the I movement of the bosses J on the disk I relatively to the circuit breaker K and can be easily produced at the moment of maximum induction by regulating the position of the circuit breaker. This regulation should correspond to a determined position of the coil relatively to that of the armature at'the moment under consideration. As the ture and the circuit breaker is rigidly coniucted with the coil which itself maybe displaced, the result is that whatever the position of the coil the spark may be pro- 'duced. at anymoment by the advancement orreversal of the coil, while preserving all the intensity of the spark, whereby advance or retardation of ignition can be obtained under. the best conditions. Another ad- '-1 vantage 'rclating'to the ignition and which results from the arrangement of the circuit breaker consists in the fact that very sudden breaks maybe obtained by reason of the large diameter which may be given to cam disk I I v A" It is to be noted that the flanges have no coils and are composed of perfectly balanced parts of slight inertia. Under these conditions they may be given a much greater speed than that which is generally admissible withordinary coils. From a practical point'of view-this advantage permits of obtaining angular speeds of the armature which give a very high efiiciency at slow 5 running particularly at the moment of starting.

According'to the construction shown in. Fig. 4, the driving member L of the mag-' neto drives the armature at high speed, for an instance by means of a multiplying gear train M and F, but to avoid theproduction Finallyit would be equally possible to'create a higher relative speed of the armature with respect to the coil by giving the, latter a rotatory movement in the opposite direction to that of the armature.

Another constructive modification also shown inFig. 4 consists in providing the polar members B and C with flanges 13 and C bent back at right angles with regard to the poles of the magnet and between which the disks E and F of the armature rotate with sufiicient clearance. Thisarrangement allows of placing the axis of rotation of the flanges in the axis of the magnets, whereas.

in theprev-iously described arrangement the axis of the flange must pass through the poles. This arrangement is evidently ap- 6 plicable'tothe type of magneto represented in Figs. 1 to 3. v The arrangement of the movable armature surrounding the coil has the advantage of I enabling the voltage of the current produced ,to be regulated, whatever the speed of rotation'of the arn'iature. For this purpose a part E and F of each of the flanges E and F is made movable so as to be able to move away slightly under the effect of centrifugal force, the reaction of which vis partly compensated for by suitable antagonistic springs. Inthis manner, when the angular speed increases, the movable parts are thrown outward and. increase the gap which separates them from the coil and thus proportionately reduce the flux which passes through the latter. 1

It will be understood thatthe characteristic features of the invention, although especially described as applicable to magnetos may be applied (with suitable modifications) to dynamos and other induction generators. 1

What I claim as my invention and desire to secure by Letters Patent of the United States is 1. In a magneto machlne or dynamo a source of magnetlc energy, a rotating armature composed of two disks of magnetic.ma-'

terial-disposed in proximity to thepoles of said source of energy, a coil within said rotating armature, and constantly polarized flanges on said disks adapted for displacement relatively to the coil .to produce variations of flux therein. V

'2. In a magnetic machineor dynamo, 'a source of magnetic energy, a rotating armature composed of two disks of magnetic material disposed in proximity to they poles of said source of energy, a coil within said rotating armature, constantly polarized flanges on said disks adapted-for displacement relatively to the coil to produce variations of flux therein, a circuit breaker in connection with the coil, and an ignition cam rotatable with the armature and coacting with said circuit breaker.

3. In a magnetic machine or dynamo, a source of'magnetic energy, a rotating armature composed of two disks of magnetic material disposed. in proximity to the poles of said source of energy, a coil within said r0- tatingarmature, constantly i polarized flanges on said disks adapted for displacement relatively to the coil to produce variations of flux therein, a circuit breaker in connection with the coil, and an ignition cam rotatable with the armature and coactirig with said circuit breaker, said coil and circuit breaker being relatively displaceable to vary the momentof ignition.

.4. Ina magnetic machine or dynamo, a source of magnetic energy, a rotating armaterial disposed in proximity to the poles of said source of energy, a coil within said roture composed. of two disks of magnetic maan ignition camirotatzihle with. the armature said member carrying the ignition cam and speed-increasing gearing between said memher and the armature.

5. Ina magneto machine or dynamo a source of magnetic energy, a rotating armature composed of two disks of magnetic material disposed in proximity to the poles of sand source of energy, a 0011 within said r0- tatlng armature, and polar zed flanges on .said disks adapted for displacement relatively to the coil to produce variations of flux therein, said flanges including, members adapted for movement under centrifugal force to vary the gap between the flanges and the coil in proportion to their angular speed.

In witness \VllUl'uUi n nave signed this specification in the presence of two witnesscs.

ALBERT KELLER-DORIAN.

Vitnesses JOAN GERMSAIN, GUIIiLAUME P1001112.

I Copies otthis patent may be obtained for five cents each, by addressing the Commissioner of Iatents, Washington, D. G. 

